Bump kdeldycke/workflows from 4.1.4 to 4.2.1 #1745

Job	Run time
OS/Python/stable matrix pre-compute	1s
tests (windows-2019, 3.11, stable)	1m 1s
tests (windows-2019, 3.13-dev, stable)	2m 22s
tests (windows-2019, 3.12, stable)	58s
tests (windows-2019, 3.9, stable)	46s
tests (windows-2019, 3.10, stable)	58s
tests (macos-14, 3.11, stable)	27s
tests (macos-14, 3.13-dev, stable)	51s
tests (macos-14, 3.12, stable)	29s
tests (macos-14, 3.9, stable)	33s
tests (macos-14, 3.10, stable)	28s
tests (macos-13, 3.11, stable)	41s
tests (macos-13, 3.13-dev, stable)	1m 31s
tests (macos-13, 3.12, stable)	37s
tests (macos-13, 3.9, stable)	39s
tests (macos-13, 3.10, stable)	41s
tests (windows-2022, 3.11, stable)	59s
tests (windows-2022, 3.13-dev, stable)	1m 28s
tests (windows-2022, 3.12, stable)	46s
tests (windows-2022, 3.9, stable)	1m 2s
tests (windows-2022, 3.10, stable)	59s
tests (ubuntu-20.04, 3.11, stable)	16s
tests (ubuntu-20.04, 3.13-dev, stable)	34s
tests (ubuntu-20.04, 3.12, stable)	17s
tests (ubuntu-20.04, 3.9, stable)	18s
tests (ubuntu-20.04, 3.10, stable)	18s
tests (ubuntu-22.04, 3.11, stable)	18s
tests (ubuntu-22.04, 3.13-dev, stable)	35s
tests (ubuntu-22.04, 3.12, stable)	43s
tests (ubuntu-22.04, 3.9, stable)	19s
tests (ubuntu-22.04, 3.10, stable)	21s
	22m 16s

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